JP2009292280A - Arrangement structure of vehicular air-conditioning unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To let an air-conditioning unit exert its performance sufficiently by arranging the unit properly at the rear side of a dash panel without causing a problem of narrowing a space inside a cabin and to improve steering stability and the like by positioning the unit at the rear side of a vehicle body. <P>SOLUTION: A center recessed part 5, which is recessed to the rear side of the vehicle body so that a part of a powertrain unit can be arranged, and a right and left pair of dash side parts 20, 21, which extend from both right and left ends of the recessed part to the outer sides in the vehicle-width directions, are formed on the dash panel 3, which partitions an engine compartment 1 and the cabin 2 in the longitudinal direction of a vehicle. The air-conditioning unit 22 is arranged which is provided with an air distribution unit 26 arranged at either one of the rear side portion of both dash side parts 20, 21. The pipe length of a duct 32 for driver's seat side air conditioning, whose base end part is connected to the air distribution unit 26 and which guides air to the air outlet 27 for the driver's seat, and the pipe length of a duct 33 for passenger's seat side air conditioning, which guides air to the air outlet 28 for the passenger's seat, are set approximately equal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an arrangement structure of a vehicle air conditioning unit in a vehicle including a powertrain unit that drives a wheel while an engine room and a vehicle compartment are partitioned in a vehicle front-rear direction by a dash panel.

Conventionally, as shown in Patent Documents 1 to 3 below, a vehicle compartment and an engine room partitioned by a dash panel are provided in front of the vehicle compartment, and a powertrain unit including an engine body and a transmission is provided in the engine room. In the installed vehicle, a concave portion is provided in the center of the dash panel in the vehicle width direction so as to be recessed toward the rear side of the vehicle from both side portions, and the rear portion of the engine body, the transmission, and the like are arranged in the concave portion. By installing the power train unit, the power train unit is positioned on the rear side of the vehicle body.
JP 2003-326981 A JP 2005-028911 A JP 2005-029057 A

  In the inventions disclosed in Patent Documents 1 to 3, the powertrain unit is disposed in a recess formed in the center of the dash panel in the vehicle width direction so that the center of gravity of the vehicle is positioned closer to the center of the vehicle body. Thus, there is an advantage that the yaw moment of inertia acting when the vehicle is traveling can be effectively reduced to improve the steering stability, and the effective space in the engine room can be effectively expanded.

  However, when the concave portion that is recessed toward the rear side of the vehicle as described above is provided in the vehicle width direction center portion of the dash panel, the air conditioning unit installed on the vehicle interior side along the dash panel. It is difficult to secure an installation space, and an air conditioning unit having a desired air conditioning performance is reduced due to the installation of an air conditioning unit on the vehicle interior side (rear side) of the recess. There were problems such as being unable to install.

  The present invention has been made in view of the above-described problems, and the air conditioning unit is appropriately disposed on the rear side of the dash panel without causing problems such as narrowing of the vehicle interior space. An object of the present invention is to provide an arrangement structure of a vehicle air-conditioning unit that can be fully exerted and that can improve steering stability and running stability by positioning a powertrain unit on the rear side of the vehicle body.

  According to a first aspect of the present invention, an engine room and a vehicle compartment are partitioned in the front-rear direction of the vehicle by a dash panel, and the vehicle is provided with a powertrain unit that drives wheels. A central recess recessed to the rear side of the vehicle body so that a part of the unit is disposed, and a pair of left and right dash sides extending from the left and right ends to the vehicle width direction outward side, An air-conditioning unit having an air distribution unit disposed at either one of the rear side portions of both dash side portions is disposed, and a base end portion is connected to the air distribution unit so that an air blowing portion for a driver's seat The duct lengths of the driver side air conditioning duct for guiding the air to the passenger seat air conditioning duct and the passenger seat side air conditioning duct for guiding the air to the air blowing portion for the passenger seat are set substantially equal.

  According to a second aspect of the present invention, in the arrangement structure of the vehicle air conditioning unit according to the first aspect, the air conditioning unit includes a blower unit and a heat exchange unit, and the vehicle width of the blower unit and the heat exchange unit. The air distribution unit is disposed on the inner side in the direction, and the base end portions of the driver side air conditioning duct and the passenger side air conditioning duct are connected to an inner side wall surface in the vehicle width direction of the air distribution unit. It is a thing.

  According to a third aspect of the present invention, in the arrangement structure of the vehicle air conditioning unit according to the first or second aspect, the passenger side adjustment unit is disposed below the driver side air conditioning duct connected to the air distribution unit. The base end is connected.

  According to a fourth aspect of the present invention, in the arrangement structure of the vehicle air conditioning unit according to the third aspect, the air distribution unit is installed so as to extend vertically in the vertical direction and is connected to the air distribution unit. A defroster-side air-conditioning duct that guides air is connected to the air-blowing portion for the defroster that opens toward the front window above the driver-side air-conditioning duct.

  According to a fifth aspect of the present invention, in the vehicle air conditioning unit arrangement structure according to any one of the first to fourth aspects, one of the dash side portions is offset to the front side of the vehicle body from the other. The air conditioning unit is disposed at a rear portion of the dash side portion that is disposed and offset to the front side of the vehicle body.

  According to a sixth aspect of the present invention, in the arrangement structure of the vehicle air conditioning unit according to the fifth aspect of the present invention, a driver seat and a passenger seat are juxtaposed in the front part of the passenger compartment, and a dash positioned in front of the passenger seat. The side portion is disposed so as to be offset from the dash side portion positioned in front of the driver's seat so that the side portion is positioned in front of the vehicle.

  The invention according to claim 7 is the vehicle air conditioning unit disposition structure according to any one of claims 1 to 6, wherein the power train is disposed vertically in an engine room. And a transmission connected to the rear portion thereof, and the rear portion of the engine body and the transmission are disposed in the central recess.

  In the invention according to claim 1, by arranging the power train unit in the central recess of the dash panel, the power train unit that is a heavy object can be positioned as far as possible on the rear side of the vehicle. By bringing the center of gravity of the vehicle closer to the center of the vehicle body, it is possible to effectively reduce the yaw moment of inertia that acts when the vehicle is traveling, and to improve steering stability and traveling stability. An air conditioning unit including an air distribution unit is disposed in any one rear side portion of both dash side portions extending outward in the vehicle width direction from the left and right ends of the central recess, and the air distribution unit The lengths of the driver side air conditioning duct that guides air to the air blowing part for the driver's seat and the passenger side air conditioning duct that guides air to the air blowing part for the passenger seat Since the air conditioning unit is installed so as to extend in the vehicle width direction along the dash panel, the air distribution unit or the like disposed on the rear side of the central recess protrudes greatly toward the vehicle interior side. By preventing the occurrence of the situation, it is possible to efficiently arrange the air conditioning unit by effectively using the rear space part of the dash side part while suppressing the space in the vehicle interior from being narrowed To, it can be advantageously effectively improved air distribution performance of the air for the ventilation resistance and uniform driver and passenger air passing through the driver's seat side air-conditioning duct and the passenger seat side air conditioning duct.

  In the invention according to claim 2, the blower unit and the heat exchange unit of the air conditioning unit are disposed in the rear side portion of the dash side portion, and the air distribution unit is disposed on the inner side in the vehicle width direction. Since the base end of the driver seat side air conditioning duct and the passenger seat side air conditioning duct is connected to the inner side wall surface of the air distribution unit in the vehicle width direction, these units are limited in size. The air can be arranged in a space and the air exchanged in the heat exchange unit is guided to the center in the vehicle width direction, and then the driver seat side air conditioning duct and the passenger seat side air conditioning duct from the air distribution unit. There is an advantage that air can be efficiently supplied over the entire interior of the vehicle.

  In the invention according to claim 3, since the base end portion of the passenger seat side adjustment unit is connected to the lower side of the driver seat side air conditioning duct connected to the air distribution unit, the driver seat side air conditioning duct has a simple configuration. And by setting the pipe length of the air-conditioning duct on the passenger seat side substantially equal, the air distribution performance for the driver seat and the passenger seat can be effectively improved.

  In the invention according to claim 4, the air distribution unit is installed so as to extend vertically in the vertical direction, and is directed toward the front window above the driver side air conditioning duct connected to the air distribution unit. Since a defroster-side air conditioning duct that guides air is connected to the air blowing section for the opening of the defroster, each air-conditioning duct is installed in the air distribution unit installed in a vertically long state at any one rear side portion of the dash side section. There is an advantage that can be arranged compactly in an appropriate state.

  In the invention according to claim 5, one of the dash side portions is disposed offset to the front side of the vehicle body relative to the other, and is offset to the front side of the vehicle body, thereby providing a rear side portion of the dash side portion. Since the air conditioning unit is disposed in the wide space formed, the air conditioning unit can be effectively used while effectively reducing the space in the vehicle interior by effectively using the rear space. There is an advantage that it can be arranged more efficiently.

  In the invention according to claim 6, in the vehicle in which the driver's seat and the passenger seat are arranged in parallel in the front portion of the passenger compartment, the dash side portion positioned in front of the passenger seat is changed from the dash side portion positioned in front of the driver seat. Since the air conditioning unit is disposed behind the dash side portion located in front of the passenger seat, the dash side portion located in front of the driver seat is offset toward the front side of the vehicle. The air conditioning unit can be easily and properly operated without interfering with the steering shaft, brake pedal, accelerator pedal, etc. There is an advantage that layout is possible.

  In the invention according to claim 7, since the power train having the engine main body and the transmission, which is a heavy article arranged vertically in the engine room, can be arranged on the rear side of the vehicle as much as possible, By positioning the center of gravity of the vehicle on the center side of the vehicle body, it is possible to effectively reduce the yaw moment of inertia that acts when the vehicle is traveling and to improve the steering stability.

  1 and 2 show a first embodiment of an arrangement structure of a vehicle air conditioning unit according to the present invention. The vehicle is provided with a dash panel 3 that partitions the engine room 1 and the vehicle compartment 2, and a front end portion of the floor panel 4 is connected to a lower end portion of the dash panel 3. A central recess 5 that is recessed toward the rear side of the vehicle body is formed at the center of the dash panel 3 in the vehicle width direction, and the center of the floor panel 4 bulges upward in the vehicle width direction. The exiting tunnel portion 6 is formed, and a driver seat 7 and a passenger seat 8 are provided on the left and right in the front portion of the passenger compartment 2.

  In the engine room 1, a pair of left and right front side frames 9, 9 are disposed so as to extend in the front-rear direction of the vehicle body, and a bumper reinforcement 10 supported at the front end thereof extends in the vehicle width direction. It is installed as follows. A power train unit 11 having an engine main body 12 composed of a rotary engine arranged in a vertical manner and a transmission 13 connected to the rear part thereof is arranged in the rear part of the engine room 1. .

  A rear portion of the engine body 12 and a front portion of the transmission 13 are disposed in a central recess 5 formed in the dash panel 3, and a rear portion of the transmission 13 and a propeller shaft 14 connected to the rear portion are provided on the dash panel 3. It is arranged in the tunnel part 6. The driving force of the power train unit 11 is transmitted to the rear wheels 15 and 15 via the propeller shaft 14 so that the rear wheels 15 and 15 are driven. Further, in the front part of the power train unit 11, a condenser 16 that takes heat from a refrigerant of an air conditioning unit 22 to be described later to liquefy the refrigerant, a cooling fan 17 that blows cooling air to the condenser 16, and a power steering unit The power cylinder 18 is disposed. In FIG. 2, reference numeral 19 denotes a suspension cross member for front wheels that supports a suspension arm or the like (not shown).

  The dash panel 3 has a pair of left and right dash side portions 20 and 21 extending from the left and right end portions of the central recess 5 outward in the vehicle width direction, and one of the dash side portions 20 and 21, that is, the passenger seat. The right dash side portion 21 located in front of the vehicle 8 is offset from the other (left side) dash side portion 20 located on the front side of the driver's seat 7 so as to be offset toward the front side of the vehicle. By offsetting one dash side portion 21 located on the front side of the passenger seat 8 toward the front side of the vehicle, the rear side portion, that is, the dash side portion 21 and the vehicle interior side (rear side) are positioned. An air conditioning unit 22 is disposed in a space formed between the instrument panel and the instrument panel.

  As shown in FIGS. 3 to 7, the air conditioning unit 22 performs heat exchange between the blower unit 24 that sucks and blows air from the air introduction portion 23 and the air blown by the blower unit 24. The heat exchange unit 25 that adjusts the temperature of the air and the air distribution unit 26 disposed on the downstream side of the heat exchange unit 25 are provided.

  The air distribution unit 26 includes a defroster air outlet 30 that opens toward the front window 29, and a pair of left and right driver air outlets 27, 27 that are installed to face the driver seat 7. The base end portions of the first to third air conditioning ducts 31 to 33 for guiding air are connected to a pair of left and right air blowing portions 28 and 28 for the passenger seat installed so as to face the passenger seat 8, respectively. ing. In addition to these air-conditioning ducts 31 to 33, a base end portion of a rear-seat occupant duct that supplies air-conditioning air toward an occupant seated in a rear seat (not shown) is connected to the air distribution unit 26. It is good also as a structure.

  The air introduction part 23 has a damper 34 for switching between the inside and outside air, and this damper 34 is supported in a displaceable manner between an outside air introduction position indicated by a solid line and an inside air introduction position indicated by a virtual line. The blower unit 24 includes a blower body 35 installed so as to face the bottom of the air introduction portion 23 and a blower motor 36 that rotationally drives a fan of the blower body 35. The fan of the blower body 35 is rotationally driven by a blower motor 36 to suck the air in the air introduction part 23 and blow it to the installation part of the heat exchange unit 25.

  The heat exchange unit 25 exchanges heat between the air blown by the blower unit 24 and the refrigerant, thereby removing the heat of the air and lowering the temperature of the cooler evaporator 37, and the installation portion of the evaporator 37. A heater core 38 that heats the air that has passed by heat of engine cooling water or the like, and an air mix damper 39 that adjusts the amount of air supplied to the installation portion of the heater core 38. Further, as shown in FIG. 3, the heat exchange unit 25 is disposed on the rear side of the blower unit 24 in a plan view so that the blower unit 24 and the heat exchange unit 25 are arranged in the front-rear direction of the vehicle. They are installed side by side.

  The heat exchange unit 25 adjusts the temperature of the air supplied to the air distribution unit 26 by swinging and displacing the air mix damper 39 to change the amount of air supplied to the installation portion of the heater core 38. It is configured. Specifically, if the air supply to the heater core 38 is completely cut off by swinging and displacing the air mix damper 39 via a driving means (not shown), the cooling state with the lowest air temperature is obtained. On the contrary, if the amount of air supplied to the heater core 38 is set to the maximum value, the heating state with the highest air temperature is achieved, and at the intermediate position indicated by the solid line in FIG. The state can be obtained.

  The air distribution unit 26 is disposed on the inner side (center side) in the vehicle width direction from the installation portion of the blower unit 24 and the heat exchange unit 25, and is installed so as to extend vertically in the vertical direction. The heat exchange unit 25 is connected to an outer wall surface located outside the air distribution box 40 in the vehicle width direction. Further, the base end portions of the first to third air conditioning ducts 31 to 33 are connected to an inner wall surface located on the inner side in the vehicle width direction of the air distribution box 40 in a state where the base end portions are arranged vertically. Opening / closing dampers 42 to 44 are installed at the connecting portions of the air conditioning ducts 31 to 33, and the air supply of the air conditioning ducts 31 to 33 is performed according to the swinging displacement of the opening / closing dampers 42 to 44. The supply amount of air distributed to each of the air conditioning ducts 31 to 33 is adjusted by opening and closing the mouth.

  The driver-seat-side air-conditioning duct composed of the second air-conditioning duct 32 includes a first air supply unit 45 extending horizontally from the inner wall surface of the air distribution box 40 toward the driver-seat side (left side), and a side end thereof. It has a second air supply part 46 extending upward and an air guide part 47 extending from the upper end part to the driver's seat side (left side). 27 is provided.

  Further, the passenger seat side air conditioning duct composed of the third air conditioning duct 33 includes a first air supply portion 48 extending substantially horizontally from the inner wall surface of the air distribution box 40 toward the driver seat side (left side), and a tip thereof. A second air supply portion 49 extending upward from the front portion, and an air guide portion 50 extending from the upper end portion to the passenger seat side (right side). The air blowing portion 28 is provided.

  The total length of the first air supply unit 45 and the second air supply 46 of the second air conditioning duct 32 is substantially equal to the total length of the first air supply unit 48 and the second air supply unit 49 of the third air conditioning duct 33. The air guide part 47 of the second air conditioning duct 32 and the air guide part 50 of the third air conditioning duct 33 are formed to have substantially the same length, so that both the air conditioning ducts are formed. The tube lengths 32 and 33, that is, the center line length A of the second air conditioning duct 32 and the center line length B of the third air conditioning duct 33 are set to be approximately equal.

  As described above, the engine room 1 and the vehicle compartment 2 are partitioned by the dash panel 3 in the front-rear direction of the vehicle, and in the vehicle including the power train unit 11 that drives the wheels 15, the dash panel 3 includes the power train. A central recess 5 that is recessed toward the rear side of the vehicle body so that a part of the unit 11 is disposed, and a pair of left and right dash side portions 20 that extend outward from the left and right ends in the vehicle width direction; 21, and an air conditioning unit 22 including an air distribution unit 26 is disposed at the rear side of either one of the dash side portions 20, 21, and the air distribution unit 26 has a base end portion. A driver-side air-conditioning duct comprising a second air-conditioning duct 32 that is connected and guides air to the driver-side air outlet 27 and a passenger-side air outlet 28 that guides air. The pipe lengths A and B of the passenger seat side air conditioning duct made up of the air conditioning duct 33 are set to be substantially equal, so that the air conditioning unit 22 is properly located on the rear side of the dash panel 3 without causing problems such as narrowing the vehicle interior space. And the powertrain unit 11 can be positioned on the rear side of the vehicle body to improve steering stability and running stability.

  That is, a heavy object disposed in the engine room 1 by disposing the rear portion of the engine body 12 constituting the power train unit 11 and the front portion of the transmission 13 in the central recess 5 of the dash panel 3. Since the power train unit 11 having the engine body 12 and the transmission 13 can be positioned as far as possible on the rear side of the vehicle, the vehicle's center of gravity is brought closer to the center of the vehicle body, so that It is possible to effectively reduce the acting yaw moment of inertia and improve the steering stability and the running stability.

  Then, as described above, the air conditioning unit 22 including the air distribution unit 26 is disposed in the rear side portion of either one of the dash side portions 20 and 21, and the base end portion is connected to the air distribution unit 26. Then, a driver-seat-side air-conditioning duct composed of a second air-conditioning duct 32 that guides air to the driver-seat air blowing part 27 and a third air-conditioning duct 33 that guides air to the passenger-seat air blowing part 28. Since the pipe lengths A and B with the passenger-side air conditioning duct made of are set to be approximately equal, the air conditioning unit 22 is installed so as to extend in the vehicle width direction along the dash panel 3. By preventing the occurrence of a situation in which the air distribution unit 26 or the like disposed on the rear side protrudes greatly toward the vehicle interior side, the above dash is suppressed while suppressing the space in the vehicle interior 2 from being narrowed. The air conditioning unit 22 can be efficiently arranged by effectively using the rear space of the portion 21 and the airflow resistance of the air passing through the driver-side air conditioning duct and the passenger-side air conditioning duct is made uniform. 7 and the passenger seat 8 have the advantage that the air distribution performance can be effectively improved.

  Further, as described above, the blower unit 24 and the heat exchanging unit 25 of the air conditioning unit 22 are disposed on either one of the dash side portions 20 and 21, for example, on the rear side portion of the dash side portion 21 positioned in front of the passenger seat 8. The air distribution unit 26 is disposed on the inner side in the vehicle width direction, and the driver seat side including the second air conditioning duct 32 on the inner side wall surface of the air distribution unit 26 in the vehicle width direction. When the base end portion of the air conditioning duct and the base end portion of the passenger side air conditioning duct composed of the third air conditioning duct 33 are connected, these units 24 to 26 are made compact and limited. After the air exchanged in the heat exchange unit 25 is guided to the center in the vehicle width direction, the second air conditioning duct 32 is connected to the second air conditioning duct 32 from the air distribution unit 26. It can be advantageously efficiently supplied air throughout the passenger compartment through the beauty third air conditioning duct 33.

  Furthermore, in the said embodiment, while connecting the 2nd air conditioning duct (driver's seat side air conditioning duct) 32 to the vertical direction center part of the air distribution unit 26, the said 3rd air conditioning duct (passenger seat side adjustment) is provided in the downward direction. Unit) 33 is connected, and the pipe length A of the second air-conditioning duct 32 and the pipe length B of the third air-conditioning duct 33 are set to be substantially equal with a simple configuration, so that the driver seat 7 and the passenger seat 8 are connected to each other. Air distribution performance can be effectively improved.

  That is, the first air supply portion extending in the vehicle width direction of the second air conditioning duct 32 that supplies air to the driver's seat 7 located at a position away from the installation portion of the air distribution unit 26 disposed on the passenger seat side. 45 tends to be longer than the first air supply part 48 of the third air conditioning duct 33 that supplies air to the passenger seat 8 located in the vicinity of the installation part of the air distribution unit 26. Correspondingly, the second air supply unit 46 extending in the vertical direction of the second air conditioning duct 32 is shorter than the second air supply unit 49 of the third air conditioning duct 33, so The connection position of the second air conditioning duct 32 is set above the connection position of the third air conditioning duct 33. Accordingly, the first and second air supply portions 45 and 46 of the second air conditioning duct 32 and the first and second air supply portions 48 and 49 of the third air conditioning duct 33 can be easily configured. There is an advantage that it is possible to prevent the difference in pipe length from occurring between the second air conditioning duct 32 and the third air conditioning duct 33 by making the overall length substantially equal.

  As shown in the first embodiment, in the vehicle in which the air distribution unit 26 is installed so as to extend vertically in the up-down direction, the driver side air conditioning duct (second air conditioning unit) connected to the air distribution unit 26 When the defroster side air conditioning duct composed of the first air conditioning duct 31 for guiding air is connected to the air outlet 30 for the defroster that opens toward the front window 29 above the duct 32), The air conditioning ducts 31 to 33 can be compactly arranged in an appropriate state in the air distribution box 40 of the air distribution unit 26 installed in a vertically long state at the rear side portion of the dash side portion 21.

  Moreover, as shown in the said 1st Embodiment, in either one back space part of both the dash side parts 20 and 21 formed so that it might extend to the outward side of the vehicle width direction from the right-and-left both ends of the center recessed part 5 When the blower unit 24 and the heat exchange unit 25 of the air conditioning unit 22 are installed side by side in the vehicle front-rear direction, the installation space of the air conditioning unit 22 in the vehicle width direction can be effectively made compact. There are advantages that the air-conditioning unit 22 can be efficiently disposed by using the rear space portion such as the dash side portion 21 more effectively, and that the air-conditioning unit 22 can be appropriately operated.

  Further, as shown in the first embodiment, when the blower unit 24 of the air conditioning unit 22 is disposed behind the one dash side portion 21, and the heat exchange unit 25 is disposed behind the blower unit 24, Air can be smoothly circulated from the blower unit 24 to the heat exchange unit 25 along the flow of air introduced from the front portion of the vehicle body into the vehicle compartment, and heat exchange in the heat exchange unit 25 is efficiently performed. And the blower unit 24, the heat exchange unit 25, and the air distribution unit 26 can be appropriately arranged in a space formed in a rear portion such as the dash side portion 21 in a compact state. .

  Further, as described above, one of the two dash side portions 20 and 21 configured to extend outward in the vehicle width direction from the left and right end portions of the central recess 5 formed in the dash panel 3 is made to be more vehicle-friendly than the other. When the air distribution unit 26 of the air conditioning unit 22 is vertically arranged in the rear space portion of the one dash side portion 21 that is provided with an offset to the front side and has a space in accordance therewith. Since the above-mentioned rear space part can be used effectively, there is an advantage that it can control more effectively that the space in vehicle interior 2 is narrowed.

  In particular, in the first embodiment, in a vehicle in which the driver's seat 7 and the passenger seat 8 are arranged side by side in the front portion of the passenger compartment, the dash side portion 21 positioned in front of the passenger seat 8 is disposed in front of the driver seat 7. The dash side portion 20 located in front of the driver's seat 7 is disposed at the rear side of the dash side portion 21 because the air conditioning unit 22 is disposed on the rear side of the dash side portion 21 from the dash side portion 20 located at the front side of the vehicle. Without causing a situation of interfering with the steering shaft, brake pedal, accelerator pedal, etc. installed on the driver's seat side, as in the case where the air conditioning unit 22 is disposed on the rear side by offsetting to the front side, There is an advantage that the air conditioning unit 22 can be easily and properly laid out.

  In the first embodiment, the engine body 12 and the transmission 13, which are heavy objects arranged vertically in the engine room, are arranged in the central recess 5 so that the rear of the vehicle is as possible as possible. Since the vehicle is configured to be positioned on the side, the center of gravity of the vehicle is positioned on the center side of the vehicle body, so that the yaw moment of inertia acting when the vehicle is traveling can be effectively reduced and the steering stability can be improved.

  Note that the present invention can also be applied to a vehicle equipped with a reciprocating engine instead of the above-described embodiment in which the engine body 12 formed of a rotary engine is disposed in the engine room 1. However, since the rotary engine can be made smaller than a reciprocating engine, the width dimension of the central concave portion 5 which is an arrangement portion of the engine body 12 made of the rotary engine is extremely increased. There is an advantage that the air conditioning unit 22 can be appropriately disposed by effectively utilizing the space formed in the side portion while preventing the air conditioning.

  FIG. 8 shows that a heat exchanging unit 25 having an evaporator 37 and a heater core 38 is disposed behind one dash side portion 21 and the like offset to the front side of the vehicle, and a blower unit 24 is disposed on the rear side thereof. 2 shows a second embodiment of the present invention. According to the configuration of the second embodiment, by disposing the heat exchange unit 25 at a position away from the seat position in the passenger compartment 2, the influence of heat generated in the heat exchange unit 25 is affected by the passenger seat. There is an advantage that it is possible to effectively prevent the passenger from sitting at 8 mag.

It is a plane sectional view showing a 1st embodiment of arrangement structure of a vehicle air-conditioning unit concerning the present invention. It is side surface sectional drawing which shows 1st Embodiment of the said front part vehicle body structure. It is a plane sectional view showing the concrete composition of an air-conditioning unit. It is side surface sectional drawing which shows the specific structure of a blower unit. It is a top view which shows the specific structure of an air conditioning unit. It is a back sectional view showing the concrete composition of an air-conditioning unit. It is a side view which shows the specific structure of an air conditioning unit. FIG. 4 is a view corresponding to FIG. 3 showing a second embodiment of the front body structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car compartment 2 Engine room 3 Dash panel 5 Center recessed part 7 Driver's seat 8 Passenger seat 11 Powertrain unit 12 Engine main body 13 Transmission 20, 21 Dash side part 22 Air conditioning unit 24 Blower unit 25 Heat exchange unit 26 Air distribution unit 27 Driver's seat Air blow-out section for passenger 28 Air blow-out section for passenger seat 29 Front window 30 Air blow-out section for defroster 31 First air-conditioning duct (defroster-side air-conditioning duct)
32 Second air conditioning duct (driver's seat side air conditioning duct)
33 Third air conditioning duct (passenger side air conditioning duct)

Claims (7)

  An engine room and a vehicle compartment are partitioned by a dash panel in the front-rear direction of the vehicle, and in a vehicle including a power train unit that drives wheels, a part of the power train unit is disposed on the dash panel. And a pair of left and right dash sides extending from the left and right ends to the vehicle width direction outward side, and either one of the two dash sides. A driver's seat side in which an air conditioning unit having an air distribution unit disposed in a rear portion of the vehicle is disposed, and a base end portion is connected to the air distribution unit to guide air to an air outlet for the driver's seat An arrangement structure of a vehicle air-conditioning unit, characterized in that the tube lengths of the air-conditioning duct and the passenger-side air-conditioning duct for guiding air to the air blowing portion for the passenger seat are set substantially equal.   The air conditioning unit includes a blower unit and a heat exchange unit. The air distribution unit is disposed on the inner side in the vehicle width direction of the blower unit and the heat exchange unit. The arrangement structure of the vehicle air conditioning unit according to claim 1, characterized in that a base end portion of the driver seat side air conditioning duct and the passenger seat side air conditioning duct is connected to an inner side wall surface.   The arrangement of the vehicle air conditioning unit according to claim 1 or 2, wherein a base end portion of the passenger seat side adjustment unit is connected below a driver seat side air conditioning duct connected to the air distribution unit. Construction.   The air distribution unit is installed so as to extend vertically in the vertical direction, and the air blowout for the defroster opens toward the front window above the driver side air conditioning duct connected to the air distribution unit. The arrangement structure of the vehicle air conditioning unit according to claim 3, wherein a defroster side air conditioning duct for guiding air is connected to the section.   One of the dash side portions is disposed offset to the front side of the vehicle body relative to the other, and the air distribution unit is disposed at the rear side portion of the dash side portion offset to the front side of the vehicle body. The arrangement | positioning structure of the vehicle air conditioning unit of any one of Claims 1-3 characterized by these.   5. The dash side portion located in front of the passenger seat is disposed so as to be offset from the dash side portion located in front of the driver seat so as to be located in front of the vehicle. Arrangement structure of vehicle air conditioning unit.   The power train has an engine body vertically arranged in the engine room and a transmission connected to the rear part thereof, and the rear part of the engine body and the transmission are arranged in the central recess. The arrangement structure of the vehicle air-conditioning unit according to any one of claims 1 to 6.

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